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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCSD(T)/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/6-31+G**
 hartrees
Energy at 0K-225.523236
Energy at 298.15K-225.529158
HF Energy-224.736966
Nuclear repulsion energy165.882785
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3298 3165        
2 A1 3124 2998        
3 A1 1702 1633        
4 A1 1467 1408        
5 A1 1420 1362        
6 A1 1269 1217        
7 A1 1045 1003        
8 A1 933 895        
9 A2 1157 1110        
10 A2 838 804        
11 A2 509 488        
12 B1 3177 3049        
13 B1 1027 986        
14 B1 805 772        
15 B1 329 316        
16 B2 3284 3151        
17 B2 1761 1690        
18 B2 1420 1362        
19 B2 1264 1213        
20 B2 1092 1048        
21 B2 928 890        

Unscaled Zero Point Vibrational Energy (zpe) 15923.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 15280.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/6-31+G**
ABC
0.36139 0.29897 0.16892

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.215
N2 0.000 0.998 0.284
N3 0.000 -0.998 0.284
C4 0.000 0.729 -0.956
C5 0.000 -0.729 -0.956
H6 -0.896 0.000 1.838
H7 0.896 0.000 1.838
H8 0.000 1.479 -1.734
H9 0.000 -1.479 -1.734

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36431.36432.28982.28981.09171.09173.29833.2983
N21.36431.99521.26882.12562.05252.05252.07423.1941
N31.36431.99522.12561.26882.05252.05253.19412.0742
C42.28981.26882.12561.45773.02333.02331.08022.3404
C52.28982.12561.26881.45773.02333.02332.34041.0802
H61.09172.05252.05253.02333.02331.79273.96803.9680
H71.09172.05252.05253.02333.02331.79273.96803.9680
H83.29832.07423.19411.08022.34043.96803.96802.9571
H93.29833.19412.07422.34041.08023.96803.96802.9571

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.785 C1 N3 C5 120.785
N2 C1 N3 93.975 N2 C1 H6 112.917
N2 C1 H7 112.917 N2 C4 C5 102.228
N2 C4 H8 123.821 N3 C1 H6 112.917
N3 C1 H7 112.917 N3 C5 C4 102.228
N3 C5 H9 123.821 C4 C5 H9 133.951
C5 C4 H8 133.951 H6 C1 H7 110.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability